GB463922A - Improvements in and relating to the treatment of arsenical pyrites or the like - Google Patents
Improvements in and relating to the treatment of arsenical pyrites or the likeInfo
- Publication number
- GB463922A GB463922A GB2512136A GB2512136A GB463922A GB 463922 A GB463922 A GB 463922A GB 2512136 A GB2512136 A GB 2512136A GB 2512136 A GB2512136 A GB 2512136A GB 463922 A GB463922 A GB 463922A
- Authority
- GB
- United Kingdom
- Prior art keywords
- roasting furnace
- arsenic
- pyrites
- treatment
- relating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/48—Sulfur dioxide; Sulfurous acid
- C01B17/50—Preparation of sulfur dioxide
- C01B17/52—Preparation of sulfur dioxide by roasting sulfides
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Sulphur dioxide free from arsenic is obtained from arsenical pyrites by subjecting the pyrites to an oxidizing treatment at a temperature such that the arsenic escapes without any substantial combustion of sulphur and introducing the so treated pyrites into a roasting furnace, the arsenic containing gases from the first treatment being introduced into the roasting furnace at one end thereof and leaving at the other end in a countercurrent direction to the charge as a current of sulphur dioxide gases practically free from arsenic. The first step may be conducted at 350--450 DEG C. with the aid of heated air which has served for the cooling of the stirring arms of the roasting furnace and may be carried out in a chamber built on top of the roasting furnace, the bottom of this chamber being the usual drying hearth of the roasting furnace. The roasting furnace may be of the type having superposed hearths and air-cooled stirring arms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2512136A GB463922A (en) | 1936-09-15 | 1936-09-15 | Improvements in and relating to the treatment of arsenical pyrites or the like |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2512136A GB463922A (en) | 1936-09-15 | 1936-09-15 | Improvements in and relating to the treatment of arsenical pyrites or the like |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB463922A true GB463922A (en) | 1937-04-08 |
Family
ID=10222547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2512136A Expired GB463922A (en) | 1936-09-15 | 1936-09-15 | Improvements in and relating to the treatment of arsenical pyrites or the like |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB463922A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE929605C (en) * | 1943-01-27 | 1955-06-30 | Metallgesellschaft Ag | Process for reconditioning the washing acid resulting from the processing of arsenic-containing gravels on contact sulfuric acid |
-
1936
- 1936-09-15 GB GB2512136A patent/GB463922A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE929605C (en) * | 1943-01-27 | 1955-06-30 | Metallgesellschaft Ag | Process for reconditioning the washing acid resulting from the processing of arsenic-containing gravels on contact sulfuric acid |
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